【摘要】 目的比较非晶体硒平板探测器DR与CR系统的胸腰段脊柱照片图像质量和解剖结构可见度。方法3位放射医师在显示器上分析30对胸腰段脊柱照片图像,每对图像分别用DR和CR系统获得,并有相同的曝光指数范围。采用5点记分法进行观察者评分,评价12个解剖结构的图像质量和可见度。结果2种系统的图像质量无显著性差异(P>0.05)。3个解剖结构(L1正位横突、T11侧位上下关节突和L1侧位棘突)的显示可见度,非晶体硒平板探测器DR系统优于CR系统(P<0.05)。其他解剖结构的显示可见度无显著性差异(P>0.05)。结论非晶体硒平板探测器DR系统的胸腰段脊柱成像的图像质量和解剖可见度等于或优于CR系统。更多还原

【Abstract】 Objective To compare the imaging quality and the anatomic detail in thoracolumbar spine of amorphous selenium flat-panel detector digital radiography(DR) system and computed radiography(CR) system.Methods Three radiologists analyzed 30 pairs of spinal radiographs on video monitor(2048×2560×8bit).In each pair,the radiograph was obtained with DR system and CR system respectively at the same exposure index(EI).The imaging quality and the visibility of 12 anatomic structures were evaluated using a five-point scale.Results (1)There was no difference in the imaging quality between the two system(P>0.05);(2)For the visibility of 3 anatomic structures(including transverse process of L1 on P-A position,superior-inferior facet of T11 and spinal process of L1 on lateral radiography),DR was significantly superior to CR (P<0.05).Conclusion The imaging quality and visibility of anatomic structures of DR were equal or superior to that of CR.更多还原